I have an '02 7.3 f350 that often shifts very slow from 3 to 4 , I was wondering if anyone had any thoughts of a cause and also if a fluid change is advised, I bought the truck with 90,000 miles on it and it now has about 120,000. I do not how often if ever the fluid has been changed in it the first 90,000. I have heard in the past that it can stir up problems to change trannsmission fluid that has been in a vehicle for many miles.

I am not real sure how to describe how slow, but it seems worse when I first drive the truck and it isn't real warm. I will often find that when it seems to be in 3rd too long if I let off the accelerator a little it will change. I am not sure what a valve body with a shift kit is

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:

Password

Please enter a password for your user account. Note that passwords are case-sensitive.

Password:

Confirm Password:

Email Address

Please enter a valid email address for yourself.

Email Address:

OR

Log-in

User Name

Password

Remember Me?

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.